I had unprotected sex on the 2nd of july. i was ovulating the 1st-5th. i have taken 2 test, both negative. could i still be pregnant?

Yes!: For a pregnancy test to be accurate, you need to use it 4 weeks after your last menstrual period. You didn't mention that so i assume 4 weeks hasn't elapsed. Furthermore, you should ovulate approximately 2 weeks prior to your menses so checking for pregnancy on july 14th is too early to determine if pregnant from july 1st-5th ovulation. Other question to ask: could you have caught an std? Yes!